Merge branch 'core-iommu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull iommu core changes from Ingo Molnar:
 "The IOMMU changes in this cycle are mostly about factoring out
  Intel-VT-d specific IRQ remapping details and introducing struct
  irq_remap_ops, in preparation for AMD specific hardware."

* 'core-iommu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  iommu: Fix off by one in dmar_get_fault_reason()
  irq_remap: Fix the 'sub_handle' uninitialized warning
  irq_remap: Fix UP build failure
  irq_remap: Fix compiler warning with CONFIG_IRQ_REMAP=y
  iommu: rename intr_remapping.[ch] to irq_remapping.[ch]
  iommu: rename intr_remapping references to irq_remapping
  x86, iommu/vt-d: Clean up interfaces for interrupt remapping
  iommu/vt-d: Convert MSI remapping setup to remap_ops
  iommu/vt-d: Convert free_irte into a remap_ops callback
  iommu/vt-d: Convert IR set_affinity function to remap_ops
  iommu/vt-d: Convert IR ioapic-setup to use remap_ops
  iommu/vt-d: Convert missing apic.c intr-remapping call to remap_ops
  iommu/vt-d: Make intr-remapping initialization generic
  iommu: Rename intr_remapping files to intel_intr_remapping

1 files changed, 87 insertions, 31 deletions

diff --git a/arch/x86/include/asm/irq_remapping.h b/arch/x86/include/asm/irq_remapping.h
index 47d99934580..5fb9bbbd2f1 100644
--- a/arch/x86/include/asm/irq_remapping.h
+++ b/arch/x86/include/asm/irq_remapping.h
@@ -1,45 +1,101 @@
-#ifndef _ASM_X86_IRQ_REMAPPING_H
-#define _ASM_X86_IRQ_REMAPPING_H
+/*
+ * Copyright (C) 2012 Advanced Micro Devices, Inc.
+ * Author: Joerg Roedel <joerg.roedel@amd.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ *
+ * This header file contains the interface of the interrupt remapping code to
+ * the x86 interrupt management code.
+ */
 
-#define IRTE_DEST(dest) ((x2apic_mode) ? dest : dest << 8)
+#ifndef __X86_IRQ_REMAPPING_H
+#define __X86_IRQ_REMAPPING_H
+
+#include <asm/io_apic.h>
 
 #ifdef CONFIG_IRQ_REMAP
-static void irq_remap_modify_chip_defaults(struct irq_chip *chip);
-static inline void prepare_irte(struct irte *irte, int vector,
-			        unsigned int dest)
+
+extern int irq_remapping_enabled;
+
+extern void setup_irq_remapping_ops(void);
+extern int irq_remapping_supported(void);
+extern int irq_remapping_prepare(void);
+extern int irq_remapping_enable(void);
+extern void irq_remapping_disable(void);
+extern int irq_remapping_reenable(int);
+extern int irq_remap_enable_fault_handling(void);
+extern int setup_ioapic_remapped_entry(int irq,
+				       struct IO_APIC_route_entry *entry,
+				       unsigned int destination,
+				       int vector,
+				       struct io_apic_irq_attr *attr);
+extern int set_remapped_irq_affinity(struct irq_data *data,
+				     const struct cpumask *mask,
+				     bool force);
+extern void free_remapped_irq(int irq);
+extern void compose_remapped_msi_msg(struct pci_dev *pdev,
+				     unsigned int irq, unsigned int dest,
+				     struct msi_msg *msg, u8 hpet_id);
+extern int msi_alloc_remapped_irq(struct pci_dev *pdev, int irq, int nvec);
+extern int msi_setup_remapped_irq(struct pci_dev *pdev, unsigned int irq,
+				  int index, int sub_handle);
+extern int setup_hpet_msi_remapped(unsigned int irq, unsigned int id);
+
+#else  /* CONFIG_IRQ_REMAP */
+
+#define irq_remapping_enabled	0
+
+static inline void setup_irq_remapping_ops(void) { }
+static inline int irq_remapping_supported(void) { return 0; }
+static inline int irq_remapping_prepare(void) { return -ENODEV; }
+static inline int irq_remapping_enable(void) { return -ENODEV; }
+static inline void irq_remapping_disable(void) { }
+static inline int irq_remapping_reenable(int eim) { return -ENODEV; }
+static inline int irq_remap_enable_fault_handling(void) { return -ENODEV; }
+static inline int setup_ioapic_remapped_entry(int irq,
+					      struct IO_APIC_route_entry *entry,
+					      unsigned int destination,
+					      int vector,
+					      struct io_apic_irq_attr *attr)
+{
+	return -ENODEV;
+}
+static inline int set_remapped_irq_affinity(struct irq_data *data,
+					    const struct cpumask *mask,
+					    bool force)
 {
-	memset(irte, 0, sizeof(*irte));
-
-	irte->present = 1;
-	irte->dst_mode = apic->irq_dest_mode;
-	/*
-	 * Trigger mode in the IRTE will always be edge, and for IO-APIC, the
-	 * actual level or edge trigger will be setup in the IO-APIC
-	 * RTE. This will help simplify level triggered irq migration.
-	 * For more details, see the comments (in io_apic.c) explainig IO-APIC
-	 * irq migration in the presence of interrupt-remapping.
-	*/
-	irte->trigger_mode = 0;
-	irte->dlvry_mode = apic->irq_delivery_mode;
-	irte->vector = vector;
-	irte->dest_id = IRTE_DEST(dest);
-	irte->redir_hint = 1;
+	return 0;
 }
-static inline bool irq_remapped(struct irq_cfg *cfg)
+static inline void free_remapped_irq(int irq) { }
+static inline void compose_remapped_msi_msg(struct pci_dev *pdev,
+					    unsigned int irq, unsigned int dest,
+					    struct msi_msg *msg, u8 hpet_id)
 {
-	return cfg->irq_2_iommu.iommu != NULL;
 }
-#else
-static void prepare_irte(struct irte *irte, int vector, unsigned int dest)
+static inline int msi_alloc_remapped_irq(struct pci_dev *pdev, int irq, int nvec)
 {
+	return -ENODEV;
 }
-static inline bool irq_remapped(struct irq_cfg *cfg)
+static inline int msi_setup_remapped_irq(struct pci_dev *pdev, unsigned int irq,
+					 int index, int sub_handle)
 {
-	return false;
+	return -ENODEV;
 }
-static inline void irq_remap_modify_chip_defaults(struct irq_chip *chip)
+static inline int setup_hpet_msi_remapped(unsigned int irq, unsigned int id)
 {
+	return -ENODEV;
 }
-#endif
+#endif /* CONFIG_IRQ_REMAP */
 
-#endif	/* _ASM_X86_IRQ_REMAPPING_H */
+#endif /* __X86_IRQ_REMAPPING_H */